Together with Arthur Bacot and F . Martin Duncan he demonstrated the association of the trench fever virus with Rickettsia quintana in lice.
2.
The disease is caused by the parasite " Rickettsia quintana ", and transmitted to humans by the body louse " Pediculus humanus corporis ".
3.
The disease is caused by the bacterium " Bartonella quintana " ( older names : " Rochalimea quintana ", " Rickettsia quintana " ), found in the stomach walls of the body louse . " Bartonella quintana " is closely related to " Bartonella henselae ", the agent of cat scratch fever and bacillary angiomatosis.